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- W2012634134 abstract "Relationship between various transport parameters (diffusion and permeability coefficients, and activation energy of diffusion (ED)) and cohesion energy density (CED) of polymers are considered on the basis of Meares equation. It is shown that the distances between neighbor free volume elements (FVEs) in polymers found via positron annihilation studies are in reasonable agreement with the diffusion jump length as estimated using Meares formula. In this way, a mean concentration of FVEs was estimated as (0.3±0.1)×1020 cm−3. Meares formula explains also several empiric correlations, such as correlations between EDi and EDj for different gases (i and j), relationship between permeability coefficients and fractional free volume (FFV) and CED." @default.
- W2012634134 created "2016-06-24" @default.
- W2012634134 creator A5041042651 @default.
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- W2012634134 date "2002-08-01" @default.
- W2012634134 modified "2023-10-17" @default.
- W2012634134 title "Meares equation and the role of cohesion energy density in diffusion in polymers" @default.
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- W2012634134 doi "https://doi.org/10.1016/s0376-7388(01)00777-3" @default.
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